cisco. tomorrow starts here. >>> fox news alert. take you out to andrews air force base where president obama and the first lady just boarded air force one. they're on their way to south africa to pay tribute to nelson mandela who died last week at the age of 95. tomorrow's national memorial service will serve as a rare reunion of nearly all of the living american presidents. george w. bush and laura bush are on air force one, along with the president now. secretary hillary clinton, also on the plane. president bill clinton and jimmy carter are traveling separately. president george herbert walker bush is the only living president not to attends. the 89-year-old is no longer able to travel long distances and certainly is one, even though it is on air force one all the way to south africa. >>> welcome back. the live tv broadcast of "the sound of music" may have struck ratings gold with more than 18 million viewers. but some critics weren't so good especially about carrie underwood's performance. some parodied the show. ♪ a song is